Electric locomotive.



No. 823,969. PATENTED JUNE 19, 1906 E. D. PRIEST. ELECTRIC LOCOMOTIVE.

APPLIUAIIUN FILED JAN. i965 IT n 07: Edward B. Priest. 9

UNITED STATES PATENT OFFICE.

EDWARD D. PRIEST, OF SCHENEUTADY, NEW YORK, ASSIGNOR TO GEN- ERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK E LECTFHO LOCOMOTIVE Specification of Letters I-atent.

Patented June 19, 1906.

Application and January 28,1905. Serial No. 243,00"

tives, of whi( h'the following is a specification.

The present invention relates to electric locomotives, and more particularly to also tor suspension for supporting the parts of the propelling-motor in operative relation to the locomotive driving-axle. It is in some cases desirable to mount the motor-armature directlyu' on the driving-axle, and in suchcases the field magnet structure must be supported independent] in operative relation to the armature. he held-magnet structure may be supported directly upon the axle by means of bearings carried thereby and surrounding the axle, or it may be carried directly from the mechanical frame of the locomotive. The first of these expedients is objectionable, inasmuch as it places the weight of the field magnet as a dead-weight intermediate the ends of the axle and necessitates the use of separate bearings. The second mode of support is inapplicable where the mechanical frame is flexibly supported upon the drivingaxle and the field-magnet wholly or partially surrounds the armature or the driving-axle unless the air-gap between the poles and armature is made undesirably large. In any prior patent, No. 625,802, granted May 20, 1899, l have disclosed means for avoiding certain ol the disadvantages in prior motors suspension apparatus by supporting the fieldniagnet directly from the axle-boxes. By supporting the held-magnet directly upon the axle-boxes the deadweight of the fieldmagnet is removed from the central portion of the axle and the armature and field-nun; net are always maintained. in proper relative position indepmidcntly of the movement of the locomotive-l'ra1nework upon the axle; The patented construction necessitates the use of a yoke or yokes passing over the driving-wheels to the axle-boxes when the field magnet is carried direct] y from the locomotive-Frame when the axle-boxes are placed outside the wheels, 1 much weaker construe- Lion than that in which the 'lield-magmelis supported directly from the uuuu frame, and

in any event increases the number of parts which must be supported in carefully-adjusted positions from the axle-box. V

The object of the present invention is to provide means for supporting the field-magnet from the locomotive-framework when the armature is mounted directly upon the axle, together with means for controlling one of the motor parts as the drivin -axle moves relatively to the locomotiveramework in such a manner that the pole-faces of the fieldmagnet structure are at all times maintained in parallelism with the armature.

urther objects of the present invention will appear in connection with the following description thereof.

One form of the present invention is illustrated in the accompanying drawings, in which.

Figure 1 is a transverse section through a locomotive substructure, showin in elevation one set of driving-wheels an a propelling-motor arranged in accordance with the )resent invention. Fig. '3 is a viempartially m side elevation and partially in crossseetion, of the parts shown in Fig. i. Fig. 3 is a detail of a portion of the motor suspension.

Similar reference characters will be used throughout the specification and drawings to indicate correspond in" parts.

I have illustrated t is present invention as applied to a locomotive in which the axleluixes are placed outside the wheels and the motor is one of the disk-armature type. It is of course understood that the axlehoxes may he otherwise arranged with respect to the driving-wheels, and the motor may he of other suitable or desired type.

A represents the locomotive-framework; B B, a pair of drivers mounted upon the axle l); (l (l, axle-boxes arranged between the ends of the axle l and the frame A. The frame A is yieldiugl r supported upon the axle-boxes through c liptic springs 1 and 2,

part thereof.

ed field-magnet structure or stator will be re,

ferred to hereinafter as the "motor-frame." The plates 5 and 6 are provided with trunnlons 7 and 8, which are journnled in bear [0 ings 9 and 10 in cross-pieces 11 and 12, se-

cured to or forming part of the lowmotiveframe A. The field-magnet is therefore pivotally arranged on an axis at right angles to the di'ivingexle. By making; the central r5 openings in themotor frame suliieiently large the locomotive[rame and axle may move relatively to each other without causing the axle-to come into contact with the motor-frame, and if the relative movement is at right anfil'es'to the normal position of the axle then tie parallelism between the polefaces and the armature will not be atl'ected. If, however, by reasonof irregularities in the rails or road-bed one wheel should drop or be 2 5 raised so as to tilt the axle, the pole-facem or some of them, if the motor-frame were rigidly supported from the locomotive-framework, would come into contact with the ar mature. By arranging the motorrframe so 0 that it may oscillate on axis at right angles to the driving-axle it may be tilted conrurrentl with the driving-axle in order that the para elisnr between the pole-laces and the armaturcmay at all times be maintained.

The mechanism for tilting the motor-frame consists bf a light yoke 13, secured to or carried by the axle-boxes U C". i The yoke 13 is provided with elongated slots 14. and 15,

through which the trunnions 7 and S in order to permit'relative movement between the axle and the locomotive-framework in a direction at right angles to the axle; The plates fr-a'nd 6 are provided with elongated vertical ribs 16 and '17 adjacent the inner ends of the trunhions' 7 and 8, and the yoke 13 is provided with inwardly projecting flanges 1 9 and 20, which engagewith the-ribs 16 and 17 ,res'peetively. It will be seen that the motor-frame may move vertically with 0 respect to the yoke 13 without interference on the art of the yoke; but it one of the drivingheels moves up or down without a correspom1mg, movement of the other wheel takingplace the flanges 19 and 20 will bear against the sides of the ribs 16 and 17 and will slightl rotate the motont'rame about its axis, there y'maint'aining the proper adjustment between the pole faces-and the armature. The lower half 0? the motor is inclosed 6o bya casing 21, and a siliiilar'casin-g may be aced over the upper halfto-lqeep out dirt md moisture. The motdr-hrushes 22 may be conveniently supported from the yoke 13, as at 23.

mthe ghr have described thepresent invention as embodied in the best form now known to me, I do not desire to limit it to the particular type of motor illustrated or to details of the suspension except to the extent indicated in the appended claims, since in its broader aspects the present invention may be eonstrurtml and arranged in various lorms other than tlle l'orm illustrated and specifically described, and in the appended claims I.

'contem 'ilate covering all mmlilirations with in the spirit and scope of the present invcntion.

What 1 claim as new, and desire to secure by Letters Patent of the United St ates, is

l. In an electric locomotive, a driving axle, a motor-armature mounted upon said axle, a loco moti ve-lramework y ieldingly supported upon said axle, a motor-frame having a pole-face carried by said locomotive-framework, and means connected with the axle for causing said pole-face to be maintained in parallelism with the armature duringthe rela tive bodily movements of the axle and locoinotivc-framework.

2. in an electric locomotive, a drivingaxle, a motor-armature mounted upon said axle, a locomotive-framework yieldingly supported upon said axle, a motor-frame having a pole-face or pole-faces carried by said framework, and means for tilting said motor-lrame to keep the pole face or faces in arallelism with the armature when the ex e is tilted relatively to the locomotive-ire!nework.

3. Vin an electric locomotive, a drivingaxle, a bearing member arranged thereon, a locomotivedranrework yivldiugly supported upon said bearing member, moto1'-armature mounted UJOI] said axle, a motor-frame having a pOllrlELUD or pole-faces mounted upon sat locoinotive-framewr)rk, and means carried by saidbearing' member for moving said motor-frame.

4. In an electric locomotive, a drivingaxle, a locomotive-framework flexibly supported upon said drivin fI-IIXlQ, a motor-armaturc mounted upon said axle, a motor-frame iivotally supported upon said locomotivelramework, and means for oscillating said motor-frame about its pivot.

5. In an electric locomotive, a drivingaxle, a loeoniotive-lramework flexibly supported upon said axle, a motor-armature mounted upon said axle, a motor-frame pivoted to said locomotive-frame'work, and means carried by the axle for oscillating the motor frame about its pivot.

(ii in an electric locomotive, a drivingaxle, a plurality of bearin members mounted. thereon, a locomotive ramework flexibly supported upon said bearing members; a motor-frame ivotcd to said locomotive-ramework, an means carried by said bearing members for oscillating said motor-frame.

7. In an electric locomotive, a drivingaxle, axleboxes mounted thereon, a locomomounted upon said axle, a motor-frame supsaid axle-boxs, a motor-armature mounted ported upon said locomotive-framework, and upon said axie, a'motor-fmme movably supmeans for maintaiaing adefinit'e angular relaported upon said locomotive-frame, and a. mm between th axle and motor-frame.

five-framework movably supported upon 5 yoke carried by said axle-boxes and open), In witness whereof I hove hereunto set; my 15 tively oonneoted to said motor-frame for hand this 25th da. ofJanuar ,1905. moving the same. DWARD PRIEST,

In an electric locomotive, a tiriving- Witnesses:

aria, a Iooomotiya-fi-amework fiexiialy sup- BENJAMIN B. HULL, w ported upon saxd axle, a. motor-armature HELEN ORFORD. 

